EP0102107A1 - Rotary and orbital sander - Google Patents
Rotary and orbital sander Download PDFInfo
- Publication number
- EP0102107A1 EP0102107A1 EP83201117A EP83201117A EP0102107A1 EP 0102107 A1 EP0102107 A1 EP 0102107A1 EP 83201117 A EP83201117 A EP 83201117A EP 83201117 A EP83201117 A EP 83201117A EP 0102107 A1 EP0102107 A1 EP 0102107A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- carrier
- pinion gear
- gear housing
- housing
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 230000005484 gravity Effects 0.000 claims abstract description 7
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/02—Driving main working members
- B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
- B23Q5/06—Driving main working members rotary shafts, e.g. working-spindles driven essentially by fluid pressure or pneumatic power
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0032—Arrangements for preventing or isolating vibrations in parts of the machine
- B23Q11/0035—Arrangements for preventing or isolating vibrations in parts of the machine by adding or adjusting a mass, e.g. counterweights
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
- B24B23/03—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor the tool being driven in a combined movement
Definitions
- This invention relates to an improvement in a rotary orbital sander of the type wherein the sanding pad has compound rotary and orbital movements.
- the tools of the Leveque patents provide a counterbalance means having a center of gravity which is not in the plane of rotation of the center of gravity of the rotating unbalanced mass of the tool. Accordingly, a complex compound motion is introduced by rotational unbalance causing operator discomfort.
- the tool of the Heffran patent has an exposed orbiting carrier member, which can cause harm to the tool operator or damage if contact is made with an object in the vicinity of the work piece.
- the tool of the present invention avoids the aforementioned short-comings of the tools of the Leveque and Heffran patents.
- the tool of the present invention has features not shown or suggested in either of these two patents, namely, a rolling contact between the rotating sanding pad carrier member and a .circular cavity integral with the motor housing which arrangement serves to provide additional rigidity to the tool, and a double antifriction bearing arrangement for the carrier member providing increased rigidity and stability to the tool.
- Another feature is a shutoff valve operable to disrupt line pressure to the tool so that the tool cannot be inadvertently started and cause harm to personnel or damage to property.
- a prime purpose of this invention is to provide a rotary orbital sander tool having compound rotary and orbital sanding pad movement, which tool has means for balancing the rotary parts to provide smooth, minimal vibration operation.
- a further purpose is to provide a rotary orbital sander tool which maximizes the rigidity and stability of the sanding pad carrier.
- Still another purpose is to provide a rotary orbital sanding tool having means to prevent inadvertent starting of the tool.
- Fig. 1 illustrates, in longitudinal cross-section, a rotary sander tool 10 embodying the nvention, which includes a motor housing 12 to which is affixed a iandle 14, and a pinion gear housing 16.
- a cover 18 encloses the notor housing 12, while a pneumatic motor having a rotor 20 and and plates 22 and 24, are arranged within the motor housing.
- the motor has sliding vanes and passageway means (not shown) which :onduct pneumatic medium flowing through passageways 26, 28 in the nandle 14 to the rotor and vanes to cause rotation of the motor.
- k spring biased throttle valve 30, is arranged to be unseated by a plunger 32 when a throttle lever 34 is depressed.
- a pipe connector 36 is affixed to the end of the handle 14 for attachment to a hose (not shown) which conducts pressurized pneumatic medium to the tool.
- the arrangement so far described is typical of sander tool designs known in the art.
- a rotary valve 38 having a center passageway 39, is arranged to regulate flow of pneumatic medium through the passageway 28, which valve is rotated by an integral knob 40 as best seen in Fig. 5.
- valve 38 When valve 38 is in position to restrict flow of pneumatic medium in the passageway 28, the tool is rendered inactive, i.e., depressing the throttle lever 34 will have no effect. In such manner the tool is protected against activation by inadvertent depression of the throttle lever.
- a drive shaft 42 is secured to the motor rotor 20, the lower projecting end being concentrically offset to provide an eccentric for rotary and orbital operation of the sanding pad, as will be apparent hereinafter.
- a pair of ball bearings 46 are arranged to provide stabilized rotation of the rotor 20.
- a pair of ball bearings 48 arranged to support a carrier member 50, having pinion gears 52 arranged about a periphery thereof.
- Pinion gears 52 mesh with ring gears 54 formed on an inner periphery of the pinion gear housing 16.
- the teeth of the gears 52 and 54 are alike for operative intermeshing. It will be seen that the eccentric movement provided by the offset projecting end 44 of the drive shaft, will by virtue of intermeshing gears 52 and 54, cause rotary and orbital movement of the carrier member 50.
- a downwardly projecting portion 55 of the gear housing 16 prevents contact with hands of the operator or objects in the vicinity by the rotating carrier member 50.
- the pinion gear 52 has 46 teeth, while the gear 54 has 50 teeth.
- the gear housing 16 has an axially arranged circumferential cavity 56 adapted to provide rolling engagement for a circular projection 58 formed on the carrier member 50. Such an arrangement provides additional support for the carrier member 50 during its rotary and orbital movement.
- a circular sanding pad assembly 60 Removably affixed to the lower end of the carrier member is a circular sanding pad assembly 60.
- a counter balancing weight 62 is affixed to the offset shaft projection 44, the centerline of said weight coinciding with the axial lines of the drive shaft portions 42 and 44.
- the center of gravity of the weight 62 is diametrically opposed to the effective center of gravity of the rotating parts, namely, gear housing 16, bearings 48, eccentric shaft 44, and the sanding pad assembly 60.
- the position of the weight 62 provides that the plane of rotation of the weight coincides with the plane of rotation of the rotating parts, thereby avoiding any "couple” or “moment” effect as results when such planes of rotation do not coincide.
- the dimensions of the counter-balancing weight 52 will vary in accordance with the size of the tool, i.e., unbalanced moving parts, however, such can be determined by application of well known design principles.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US404642 | 1982-08-02 | ||
US06/404,642 US4467565A (en) | 1982-08-02 | 1982-08-02 | Rotary and orbital sander |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0102107A1 true EP0102107A1 (en) | 1984-03-07 |
Family
ID=23600441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83201117A Ceased EP0102107A1 (en) | 1982-08-02 | 1983-07-27 | Rotary and orbital sander |
Country Status (4)
Country | Link |
---|---|
US (1) | US4467565A (ja) |
EP (1) | EP0102107A1 (ja) |
JP (1) | JPS5942267A (ja) |
CA (1) | CA1217341A (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0258518A2 (de) * | 1986-09-04 | 1988-03-09 | Licentia Patent-Verwaltungs-GmbH | Schwingschleifer |
EP0272725A2 (en) * | 1986-12-22 | 1988-06-29 | Guido Valentini | Portable electric tool with balanced orbital movement |
GB2312638A (en) * | 1996-05-02 | 1997-11-05 | Bosch Gmbh Robert | Hand held grinding machines |
US6007412A (en) * | 1998-01-30 | 1999-12-28 | Hutchins Manufacturing Company | Rotary abrading or polishing tool |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3625535C2 (de) * | 1986-07-29 | 1994-05-11 | Festo Kg | Exzentertellerschleifer |
DE3809930A1 (de) * | 1988-03-24 | 1989-10-05 | Bosch Gmbh Robert | Exzenterschleifer |
US4932164A (en) * | 1988-07-13 | 1990-06-12 | Sullivan Glenn F | Counterbalance safety guard for a dual action sander |
US4879847A (en) * | 1989-03-13 | 1989-11-14 | Snap-On Tools Corporation | Cover for pneumatic tool |
US5319888A (en) * | 1992-11-13 | 1994-06-14 | Dynabrade, Inc. | Random orbital sander |
US6979254B1 (en) * | 1997-01-23 | 2005-12-27 | Hao Chien Chao | Ergonomically friendly orbital sander construction |
US6004197A (en) * | 1997-01-23 | 1999-12-21 | Hao Chien Chao | Ergonomically friendly random orbital sander construction |
US6257970B1 (en) * | 1997-01-23 | 2001-07-10 | Hao Chien Chao | Ergonomically friendly random orbital construction |
US20030143935A1 (en) * | 1997-01-23 | 2003-07-31 | Huber Paul W. | Ergonomically friendly orbital sander construction |
US5879228A (en) * | 1997-11-14 | 1999-03-09 | Sun; Yung-Yung | Pneumatic grinding/polishing machine |
US6009767A (en) * | 1998-04-23 | 2000-01-04 | Rudolph; Gary | Same-RPM rotary motion to eccentric rotary motion conversion |
US6558235B2 (en) | 2001-03-13 | 2003-05-06 | The Boeing Company | Ergonomic sander handle apparatus and method |
US20040166788A1 (en) * | 2003-02-20 | 2004-08-26 | George Travis | Sanding disc |
US7118467B2 (en) * | 2003-10-22 | 2006-10-10 | Sun Yung-Yung | Pneumatic buffing machine |
US20050090191A1 (en) * | 2003-10-22 | 2005-04-28 | Sun Yung Y. | Pneumatic handheld grinding apparatus |
DE10352500A1 (de) * | 2003-11-11 | 2005-06-09 | Robert Bosch Gmbh | Handwerkzeugmaschine |
JP4645036B2 (ja) * | 2004-01-16 | 2011-03-09 | 日立工機株式会社 | 電動工具 |
US7022002B2 (en) * | 2004-03-03 | 2006-04-04 | Dynabrade, Inc. | Modular counterweight apparatus for an orbital abrading machine |
US8100745B2 (en) * | 2007-03-16 | 2012-01-24 | Black & Decker Inc. | Low vibration sander with a flexible top handle |
US20150056897A1 (en) * | 2013-08-22 | 2015-02-26 | X'pole Precision Tools Inc. | Sander providing airflow correction |
JP7117832B2 (ja) * | 2017-07-24 | 2022-08-15 | 京セラインダストリアルツールズ株式会社 | ポリッシャ |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3520090A (en) * | 1968-01-29 | 1970-07-14 | Donald Lee | Surface finishing machine |
US3857206A (en) * | 1973-03-08 | 1974-12-31 | Nat Detroit Inc Co | Compound motion rubbing machine |
DE2938704A1 (de) * | 1979-09-25 | 1981-09-10 | Festo-Maschinenfabrik Gottlieb Stoll, 7300 Esslingen | Exzentertellerschleifer |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2796704A (en) * | 1951-11-15 | 1957-06-25 | Millers Falls Co | Orbital sander |
US3205622A (en) * | 1963-02-25 | 1965-09-14 | Treffle J Leveque | Rotatable grinding and surfacing tool |
US3287859A (en) * | 1965-08-23 | 1966-11-29 | Treffle J Leveque | Rotatable grinding and surfacing tool |
IT1072567B (it) * | 1975-09-26 | 1985-04-10 | Lilly Co Eli | Composti della difenilammina per impieghi rodenticidi |
FR2341649B1 (fr) * | 1976-02-19 | 1979-07-20 | Inst Nat Sante Rech Med | Procede de recherche bacteriologique |
JPS55150964A (en) * | 1979-05-04 | 1980-11-25 | Kinichi Takeuchi | Grinding device capable of performing combined motion of rotation and circular motion |
US4253846A (en) * | 1979-11-21 | 1981-03-03 | Technicon Instruments Corporation | Method and apparatus for automated analysis of fluid samples |
-
1982
- 1982-08-02 US US06/404,642 patent/US4467565A/en not_active Expired - Lifetime
-
1983
- 1983-07-27 EP EP83201117A patent/EP0102107A1/en not_active Ceased
- 1983-07-29 CA CA000433632A patent/CA1217341A/en not_active Expired
- 1983-07-29 JP JP58137938A patent/JPS5942267A/ja active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3520090A (en) * | 1968-01-29 | 1970-07-14 | Donald Lee | Surface finishing machine |
US3857206A (en) * | 1973-03-08 | 1974-12-31 | Nat Detroit Inc Co | Compound motion rubbing machine |
DE2938704A1 (de) * | 1979-09-25 | 1981-09-10 | Festo-Maschinenfabrik Gottlieb Stoll, 7300 Esslingen | Exzentertellerschleifer |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0258518A2 (de) * | 1986-09-04 | 1988-03-09 | Licentia Patent-Verwaltungs-GmbH | Schwingschleifer |
EP0258518A3 (en) * | 1986-09-04 | 1988-07-06 | Licentia Patent-Verwaltungs-Gmbh | Orbital sander |
EP0272725A2 (en) * | 1986-12-22 | 1988-06-29 | Guido Valentini | Portable electric tool with balanced orbital movement |
EP0272725A3 (en) * | 1986-12-22 | 1990-02-07 | Guido Valentini | Portable electric tool with balanced orbital movement |
GB2312638A (en) * | 1996-05-02 | 1997-11-05 | Bosch Gmbh Robert | Hand held grinding machines |
GB2312638B (en) * | 1996-05-02 | 1998-07-01 | Bosch Gmbh Robert | Hand-held grinding machine |
CN1082415C (zh) * | 1996-05-02 | 2002-04-10 | 罗伯特-博希股份公司 | 手持式磨光机 |
US6007412A (en) * | 1998-01-30 | 1999-12-28 | Hutchins Manufacturing Company | Rotary abrading or polishing tool |
Also Published As
Publication number | Publication date |
---|---|
CA1217341A (en) | 1987-02-03 |
US4467565A (en) | 1984-08-28 |
JPH0448583B2 (ja) | 1992-08-07 |
JPS5942267A (ja) | 1984-03-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
17P | Request for examination filed |
Effective date: 19840613 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
|
18R | Application refused |
Effective date: 19861109 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: WALLACE, WILLIAM KEITH Inventor name: GIARDINO, DAVID ANDREW Inventor name: GROSHANS, JOSEPH ROBERT |